C4937403 Dongfeng 4BT air compressor pump assembly

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Applicable scope: EQ4BTAA3.9, Dong Dong Kang Kang Dong Kang EQ4BT3.9, B150 20, EQB140-20, Dong Dong Kang Kang 4BT3.9-C80 related accessories: timing gear chamber, air compressor shaft working principle: pneumatic brake, brake gas installation position: the front end of the engine, the gear chamber on the surface and fault analysis are: cause analysis lack of air compressor pump or pressure: 1, air compressor pressure relief valve block. The valve plate deformation or fracture 2, inlet and outlet carbon driving belt between 3, air compressor and engine loose slip or air compressor to the gas tank between the pipeline rupture or joint leakage, 4 air compressor exhaust valve seal, the spring is too soft or broken, the air compressor cylinder head bolts loosening, trachoma and cylinder head gasket washed out and leakage 5, air compressor cylinder and piston and piston ring wear off even leak